/* ===========================================================
   Loc-Line 中国官网 — 上海翼联工贸有限公司
   主样式表
   =========================================================== */

:root {
  --brand-blue: #005baa;
  --brand-blue-dark: #004080;
  --brand-blue-light: #e8f2fb;
  --brand-orange: #f26522;
  --brand-orange-dark: #d9531e;
  --brand-orange-light: #fff2e8;
  --ink: #1a1d21;
  --ink-soft: #4a5058;
  --ink-mute: #7a828c;
  --line: #e2e6ea;
  --line-soft: #eef1f4;
  --bg: #ffffff;
  --bg-soft: #f7f9fb;
  --white: #ffffff;
  --radius: 4px;
  --radius-lg: 8px;
  --shadow-sm: 0 1px 3px rgba(20, 30, 45, .08);
  --shadow: 0 2px 10px rgba(20, 30, 45, .10);
  --shadow-lg: 0 8px 32px rgba(20, 30, 45, .14);
  --maxw: 1280px;
  --header-h: 72px;
  --font: "PingFang SC", "Microsoft YaHei", "Hiragino Sans GB", "Helvetica Neue", Arial, sans-serif;
}

*, *::before, *::after { box-sizing: border-box; }

html { -webkit-text-size-adjust: 100%; scroll-behavior: smooth; }

body {
  margin: 0;
  font-family: var(--font);
  font-size: 15px;
  line-height: 1.75;
  color: var(--ink);
  background: var(--bg);
  overflow-x: hidden;
}

img { max-width: 100%; height: auto; display: block; }
a { color: var(--brand-blue); text-decoration: none; transition: color .15s; }
a:hover { color: var(--brand-orange); }

:focus-visible {
  outline: 3px solid var(--brand-orange);
  outline-offset: 2px;
  border-radius: 2px;
}

h1, h2, h3, h4, h5 { margin: 0 0 .5em; line-height: 1.35; font-weight: 700; color: var(--ink); }
h1 { font-size: 2.1rem; }
h2 { font-size: 1.7rem; }
h3 { font-size: 1.25rem; }
p { margin: 0 0 1em; }

.container { width: 100%; max-width: var(--maxw); margin: 0 auto; padding: 0 20px; }
.container-narrow { max-width: 900px; }

.sr-only {
  position: absolute; width: 1px; height: 1px; padding: 0; margin: -1px;
  overflow: hidden; clip: rect(0,0,0,0); white-space: nowrap; border: 0;
}

.skip-link {
  position: absolute; left: -9999px; top: 0; z-index: 9999;
  background: var(--brand-blue); color: #fff; padding: 10px 20px;
}
.skip-link:focus { left: 0; color: #fff; }

/* ── 顶栏 ────────────────────────────────────────────────── */
.topbar {
  background: var(--ink);
  color: #cfd5db;
  font-size: .82rem;
  line-height: 1.6;
}
.topbar .container {
  display: flex; flex-wrap: wrap; gap: 6px 22px;
  align-items: center; justify-content: space-between;
  padding-top: 7px; padding-bottom: 7px;
}
.topbar a { color: #e8edf2; }
.topbar a:hover { color: #fff; }
.topbar .tb-item { display: inline-flex; align-items: center; gap: 6px; }
.topbar .tb-label { color: #8b949e; }

/* ── 主导航 ──────────────────────────────────────────────── */
.site-header {
  position: sticky; top: 0; z-index: 500;
  background: var(--white);
  border-bottom: 1px solid var(--line);
  box-shadow: var(--shadow-sm);
}
.site-header .container {
  display: flex; align-items: center; gap: 16px;
  min-height: var(--header-h);
}
.brand { display: flex; align-items: center; gap: 10px; flex-shrink: 0; }
.brand-logo {
  height: 36px; width: auto; border-radius: 3px;
}
.brand-text { line-height: 1.2; }
.brand-text .bn {
  display: block; font-size: .9rem; font-weight: 700; color: var(--ink);
}
.brand-text .bs { display: block; font-size: .7rem; color: var(--ink-mute); }

.main-nav { margin-left: auto; }
.nav-list {
  list-style: none; margin: 0; padding: 0;
  display: flex; align-items: center; gap: 0; flex-wrap: nowrap;
}
.nav-list > li { position: relative; }
.nav-list > li > a {
  display: block; padding: 22px 9px;
  font-size: .9rem; font-weight: 500; color: var(--ink);
  border-bottom: 3px solid transparent;
  white-space: nowrap;
}
.nav-list > li > a:hover,
.nav-list > li > a:focus,
.nav-list > li.current > a {
  color: var(--brand-blue);
  border-bottom-color: var(--brand-orange);
}
.nav-list .has-child > a::after {
  content: "▾"; font-size: .7em; margin-left: 5px; opacity: .6;
}
.sub-menu {
  list-style: none; margin: 0; padding: 6px 0; min-width: 220px;
  position: absolute; left: 0; top: 100%;
  background: #fff; border: 1px solid var(--line);
  border-radius: 0 0 var(--radius) var(--radius);
  box-shadow: var(--shadow-lg);
  opacity: 0; visibility: hidden; transform: translateY(6px);
  transition: opacity .18s, transform .18s, visibility .18s;
  z-index: 60;
}
.nav-list > li:hover > .sub-menu,
.nav-list > li:focus-within > .sub-menu {
  opacity: 1; visibility: visible; transform: translateY(0);
}
.sub-menu a {
  display: block; padding: 8px 18px;
  font-size: .89rem; color: var(--ink-soft);
  border-left: 3px solid transparent;
}
.sub-menu a:hover { color: var(--brand-blue); background: var(--brand-blue-light); border-left-color: var(--brand-orange); }
.sub-menu .sub-head {
  padding: 8px 18px 4px; font-size: .74rem; font-weight: 700;
  color: var(--ink-mute); text-transform: uppercase; letter-spacing: .06em;
}

.nav-toggle {
  display: none; margin-left: auto;
  background: none; border: 1px solid var(--line); border-radius: var(--radius);
  padding: 8px 10px; cursor: pointer; color: var(--ink);
}
.nav-toggle span {
  display: block; width: 22px; height: 2px; background: currentColor;
  margin: 4px 0; transition: transform .2s, opacity .2s;
}
.nav-toggle[aria-expanded="true"] span:nth-child(1) { transform: translateY(6px) rotate(45deg); }
.nav-toggle[aria-expanded="true"] span:nth-child(2) { opacity: 0; }
.nav-toggle[aria-expanded="true"] span:nth-child(3) { transform: translateY(-6px) rotate(-45deg); }

/* ── 按钮 ────────────────────────────────────────────────── */
.btn {
  display: inline-flex; align-items: center; justify-content: center; gap: 7px;
  padding: 10px 22px; border-radius: var(--radius);
  font-size: .92rem; font-weight: 600; line-height: 1.4;
  border: 1px solid transparent; cursor: pointer;
  transition: background .16s, color .16s, border-color .16s, box-shadow .16s;
  white-space: nowrap;
}
.btn-primary { background: var(--brand-orange); color: #fff; }
.btn-primary:hover { background: var(--brand-orange-dark); color: #fff; }
.btn-blue { background: var(--brand-blue); color: #fff; }
.btn-blue:hover { background: var(--brand-blue-dark); color: #fff; }
.btn-ghost { background: #fff; color: var(--brand-blue); border-color: var(--brand-blue); }
.btn-ghost:hover { background: var(--brand-blue); color: #fff; }
.btn-outline { background: transparent; color: #fff; border-color: rgba(255,255,255,.8); }
.btn-outline:hover { background: rgba(255,255,255,.15); color: #fff; border-color: #fff; }
.btn-lg { padding: 13px 30px; font-size: 1rem; }
.btn-sm { padding: 6px 14px; font-size: .84rem; }
.btn-block { display: flex; width: 100%; }

/* ── 页头横幅 ────────────────────────────────────────────── */
.page-hero {
  background: linear-gradient(115deg, var(--brand-blue-dark) 0%, var(--brand-blue) 55%, #1673c4 100%);
  color: #fff; padding: 38px 0; position: relative; overflow: hidden;
}
.page-hero::after {
  content: ""; position: absolute; right: -60px; top: -60px;
  width: 320px; height: 320px; border-radius: 50%;
  background: rgba(255,255,255,.06);
}
.page-hero h1 { color: #fff; margin-bottom: 6px; font-size: 1.85rem; }
.page-hero p { color: rgba(255,255,255,.9); margin: 0; max-width: 760px; }

.breadcrumb {
  font-size: .84rem; color: rgba(255,255,255,.82);
  margin-bottom: 8px;
}
.breadcrumb a { color: rgba(255,255,255,.9); }
.breadcrumb a:hover { color: #fff; text-decoration: underline; }
.breadcrumb .sep { margin: 0 7px; opacity: .6; }

/* ── 区块 ────────────────────────────────────────────────── */
.section { padding: 56px 0; }
.section-alt { background: var(--bg-soft); }
.section-tight { padding: 36px 0; }

.section-head { margin-bottom: 30px; }
.section-head .eyebrow {
  display: inline-block; font-size: .78rem; font-weight: 700;
  letter-spacing: .1em; color: var(--brand-orange);
  text-transform: uppercase; margin-bottom: 6px;
}
.section-head h2 { margin-bottom: 8px; }
.section-head p { color: var(--ink-soft); max-width: 760px; margin-bottom: 0; }
.section-head.center { text-align: center; }
.section-head.center p { margin-left: auto; margin-right: auto; }

.grid { display: grid; gap: 22px; }
.grid-2 { grid-template-columns: repeat(2, 1fr); }
.grid-3 { grid-template-columns: repeat(3, 1fr); }
.grid-4 { grid-template-columns: repeat(4, 1fr); }
.grid-auto { grid-template-columns: repeat(auto-fill, minmax(250px, 1fr)); }

/* ── 卡片 ────────────────────────────────────────────────── */
.card {
  background: #fff; border: 1px solid var(--line);
  border-radius: var(--radius-lg); overflow: hidden;
  display: flex; flex-direction: column;
  transition: box-shadow .2s, transform .2s, border-color .2s;
}
.card:hover { box-shadow: var(--shadow); transform: translateY(-3px); border-color: #d3dae1; }
.card-body { padding: 18px; flex: 1; display: flex; flex-direction: column; }
.card-body h3 { font-size: 1.02rem; margin-bottom: 6px; }
.card-body p { font-size: .87rem; color: var(--ink-soft); margin-bottom: 12px; }
.card-media {
  aspect-ratio: 1 / 1; background: #fff;
  display: flex; align-items: center; justify-content: center;
  padding: 16px; border-bottom: 1px solid var(--line-soft);
  overflow: hidden;
}
.card-media img {
  max-height: 100%; width: auto; object-fit: contain;
  transition: transform .3s;
}
.card:hover .card-media img { transform: scale(1.06); }

.tag {
  display: inline-block; padding: 3px 9px; border-radius: 3px;
  font-size: .74rem; font-weight: 600; line-height: 1.6;
  background: var(--brand-blue-light); color: var(--brand-blue);
}
.tag-orange { background: var(--brand-orange-light); color: var(--brand-orange-dark); }
.tag-gray { background: var(--line-soft); color: var(--ink-mute); }
.tag-green { background: #e7f6ed; color: #1a7f47; }

.price { font-size: 1.1rem; font-weight: 700; color: var(--brand-orange); }
.price-note { font-size: .74rem; color: var(--ink-mute); font-weight: 400; }

/* ── 产品网格 ────────────────────────────────────────────── */
.prod-grid {
  display: grid; gap: 18px;
  grid-template-columns: repeat(auto-fill, minmax(200px, 1fr));
}
.prod-card {
  background: #fff; border: 1px solid var(--line);
  border-radius: var(--radius); overflow: hidden;
  display: flex; flex-direction: column;
  transition: box-shadow .18s, border-color .18s;
}
.prod-card:hover { box-shadow: var(--shadow); border-color: #cfd8e0; }
.prod-card .pm {
  aspect-ratio: 1; padding: 12px;
  display: flex; align-items: center; justify-content: center;
  background: #fff; border-bottom: 1px solid var(--line-soft);
}
.prod-card .pm img { max-height: 100%; width: auto; object-fit: contain; }
.prod-card .pb { padding: 12px; flex: 1; display: flex; flex-direction: column; }
.prod-card .pt {
  font-size: .78rem; color: var(--ink-mute); margin-bottom: 3px;
  font-family: ui-monospace, SFMono-Regular, Menlo, monospace;
}
.prod-card .pn {
  font-size: .87rem; font-weight: 600; line-height: 1.5; color: var(--ink);
  margin-bottom: 8px; flex: 1;
  display: -webkit-box; -webkit-line-clamp: 3; -webkit-box-orient: vertical;
  overflow: hidden;
}
.prod-card .pn a { color: inherit; }
.prod-card .pp { font-size: .95rem; font-weight: 700; color: var(--brand-orange); }
.prod-card .pp small { font-size: .68rem; color: var(--ink-mute); font-weight: 400; }

/* ── 侧边栏布局（分类页/产品页）───────────────────────────── */
.layout-side { display: grid; grid-template-columns: 268px 1fr; gap: 30px; align-items: start; }
.layout-side-aside { position: sticky; top: calc(var(--header-h) + 16px); }

.side-box {
  background: #fff; border: 1px solid var(--line);
  border-radius: var(--radius-lg); margin-bottom: 18px; overflow: hidden;
}
.side-box > h3 {
  padding: 13px 16px; font-size: .92rem; margin: 0;
  background: var(--bg-soft); border-bottom: 1px solid var(--line);
}
.side-box .sb-body { padding: 12px 16px; }
.side-box ul { list-style: none; margin: 0; padding: 6px 0; }
.side-box li a {
  display: block; padding: 6px 16px; font-size: .87rem; color: var(--ink-soft);
  border-left: 3px solid transparent;
}
.side-box li a:hover { color: var(--brand-blue); background: var(--brand-blue-light); border-left-color: var(--brand-orange); }
.side-box li a.on { color: var(--brand-blue); font-weight: 600; border-left-color: var(--brand-orange); }
.side-box li .cnt { float: right; font-size: .76rem; color: var(--ink-mute); }

.acc-group { border-bottom: 1px solid var(--line-soft); }
.acc-group:last-child { border-bottom: 0; }
.acc-head {
  width: 100%; text-align: left; background: none; border: 0;
  padding: 11px 16px; font: inherit; font-size: .89rem; font-weight: 600;
  color: var(--ink); cursor: pointer; display: flex;
  align-items: center; justify-content: space-between; gap: 8px;
}
.acc-head:hover { color: var(--brand-blue); }
.acc-head::after { content: "+"; font-size: 1.1rem; color: var(--ink-mute); line-height: 1; }
.acc-group.open .acc-head::after { content: "−"; }
.acc-body { display: none; padding-bottom: 8px; }
.acc-group.open .acc-body { display: block; }
.acc-body ul { padding: 0; }
.acc-body li a { padding-left: 26px; font-size: .84rem; }

/* ── 产品详情页 ──────────────────────────────────────────── */
.pd { display: grid; grid-template-columns: 460px 1fr; gap: 40px; align-items: start; }
.pd-gallery {
  background: #fff; border: 1px solid var(--line);
  border-radius: var(--radius-lg); padding: 24px; text-align: center;
  position: sticky; top: calc(var(--header-h) + 16px);
}
.pd-gallery .main-img {
  aspect-ratio: 1; display: flex; align-items: center; justify-content: center;
  margin-bottom: 14px;
}
.pd-gallery .main-img img { max-height: 100%; width: auto; object-fit: contain; }
.pd-thumbs { display: flex; gap: 8px; flex-wrap: wrap; justify-content: center; }
.pd-thumbs img {
  width: 62px; height: 62px; object-fit: contain; cursor: pointer;
  border: 1px solid var(--line); border-radius: var(--radius);
  padding: 4px; background: #fff;
}
.pd-thumbs img:hover { border-color: var(--brand-orange); }

.pd-title { font-size: 1.6rem; margin-bottom: 4px; }
.pd-sub { color: var(--ink-mute); font-size: .87rem; margin-bottom: 16px; }
.pd-meta { display: flex; gap: 10px; flex-wrap: wrap; margin-bottom: 18px; }
.pd-price-box {
  background: var(--bg-soft); border: 1px solid var(--line);
  border-radius: var(--radius-lg); padding: 18px; margin-bottom: 20px;
}
.pd-price-box .pl { font-size: .8rem; color: var(--ink-mute); margin-bottom: 4px; }
.pd-price-box .pv { font-size: 1.9rem; font-weight: 700; color: var(--brand-orange); line-height: 1.2; }
.pd-price-box .pv small { font-size: .78rem; color: var(--ink-mute); font-weight: 400; }
.pd-price-box .pn { font-size: .78rem; color: var(--ink-mute); margin-top: 6px; }

.pd-cta { display: flex; gap: 10px; flex-wrap: wrap; margin-bottom: 24px; }

.spec-table { width: 100%; border-collapse: collapse; margin-bottom: 22px; }
.spec-table th, .spec-table td {
  text-align: left; padding: 9px 12px; border-bottom: 1px solid var(--line-soft);
  font-size: .88rem; vertical-align: top;
}
.spec-table th { width: 33%; color: var(--ink-mute); font-weight: 500; background: var(--bg-soft); }

.pd-tabs { margin-top: 32px; }
.tab-nav {
  display: flex; gap: 2px; border-bottom: 2px solid var(--line);
  margin-bottom: 18px; flex-wrap: wrap;
}
.tab-nav button {
  background: none; border: 0; border-bottom: 3px solid transparent;
  margin-bottom: -2px; padding: 10px 18px; font: inherit; font-size: .92rem;
  font-weight: 600; color: var(--ink-mute); cursor: pointer;
}
.tab-nav button:hover { color: var(--brand-blue); }
.tab-nav button.active { color: var(--brand-blue); border-bottom-color: var(--brand-orange); }
.tab-panel { display: none; }
.tab-panel.active { display: block; }

/* ── 首页 Hero ───────────────────────────────────────────── */
.hero {
  background: linear-gradient(120deg, #063a6b 0%, var(--brand-blue) 50%, #1a7fd4 100%);
  color: #fff; position: relative; overflow: hidden;
}
.hero-inner {
  display: grid; grid-template-columns: 1.05fr .95fr;
  gap: 44px; align-items: center; padding: 62px 0;
}
.hero h1 { color: #fff; font-size: 2.5rem; margin-bottom: 14px; }
.hero h1 em { font-style: normal; color: #ffb37a; }
.hero p.lead { font-size: 1.03rem; color: rgba(255,255,255,.92); margin-bottom: 24px; max-width: 560px; }
.hero-cta { display: flex; gap: 12px; flex-wrap: wrap; }
.hero-badges { display: flex; gap: 26px; flex-wrap: wrap; margin-top: 30px; }
.hero-badge .hb-n {
  font-size: 1.6rem; font-weight: 800; color: #ffb37a; line-height: 1.2;
}
.hero-badge .hb-l { font-size: .82rem; color: rgba(255,255,255,.82); }
.hero-art { position: relative; max-width: 520px; margin: 0 auto; }
.hero-art img {
  width: 100%; height: auto; display: block;
  aspect-ratio: 1 / 1; object-fit: cover;
  border-radius: var(--radius-lg);
  box-shadow: 0 18px 50px rgba(0,0,0,.28);
  background: #fff; padding: 18px;
}

/* ── 特性条 ──────────────────────────────────────────────── */
.feature-strip { display: grid; grid-template-columns: repeat(4, 1fr); gap: 20px; }
.feature {
  background: #fff; border: 1px solid var(--line);
  border-left: 4px solid var(--brand-orange);
  border-radius: var(--radius); padding: 20px;
}
.feature .fi {
  width: 42px; height: 42px; border-radius: 50%;
  background: var(--brand-blue-light); color: var(--brand-blue);
  display: flex; align-items: center; justify-content: center;
  font-size: 1.2rem; margin-bottom: 12px;
}
.feature h3 { font-size: 1rem; margin-bottom: 5px; }
.feature p { font-size: .86rem; color: var(--ink-soft); margin: 0; }

/* ── 分类导航 ────────────────────────────────────────────── */
.cat-block { margin-bottom: 34px; }
.cat-block-head {
  display: flex; align-items: baseline; justify-content: space-between;
  gap: 14px; margin-bottom: 14px; padding-bottom: 8px;
  border-bottom: 2px solid var(--line);
}
.cat-block-head h3 { margin: 0; font-size: 1.15rem; }
.cat-block-head a { font-size: .84rem; }
.cat-pills { display: flex; flex-wrap: wrap; gap: 8px; }
.cat-pill {
  display: inline-flex; align-items: center; gap: 7px;
  padding: 7px 14px; background: #fff;
  border: 1px solid var(--line); border-radius: 100px;
  font-size: .86rem; color: var(--ink-soft);
}
.cat-pill:hover { border-color: var(--brand-blue); color: var(--brand-blue); background: var(--brand-blue-light); }
.cat-pill .c { font-size: .75rem; color: var(--ink-mute); }

/* ── 图库 ────────────────────────────────────────────────── */
.gallery-grid {
  display: grid; gap: 14px;
  grid-template-columns: repeat(auto-fill, minmax(190px, 1fr));
}
.gallery-item {
  background: #fff; border: 1px solid var(--line);
  border-radius: var(--radius); overflow: hidden; cursor: pointer;
  transition: box-shadow .18s, transform .18s;
}
.gallery-item:hover { box-shadow: var(--shadow); transform: translateY(-2px); }
.gallery-item img { aspect-ratio: 4/3; object-fit: cover; width: 100%; }
.gallery-item .gi-cap {
  padding: 8px 10px; font-size: .8rem; color: var(--ink-soft);
  border-top: 1px solid var(--line-soft);
}

.lightbox {
  position: fixed; inset: 0; z-index: 2000;
  background: rgba(8, 14, 22, .92);
  display: none; align-items: center; justify-content: center;
  padding: 40px;
}
.lightbox.open { display: flex; }
.lightbox img { max-width: 92vw; max-height: 84vh; object-fit: contain; }
.lightbox .lb-cap {
  color: #fff; text-align: center; margin-top: 14px; font-size: .9rem;
}
.lightbox .lb-close {
  position: absolute; top: 20px; right: 24px;
  background: none; border: 0; color: #fff; font-size: 2.2rem;
  cursor: pointer; line-height: 1;
}
.lightbox .lb-nav {
  position: absolute; top: 50%; transform: translateY(-50%);
  background: rgba(255,255,255,.12); border: 0; color: #fff;
  width: 48px; height: 48px; border-radius: 50%;
  font-size: 1.5rem; cursor: pointer;
}
.lightbox .lb-nav:hover { background: rgba(255,255,255,.28); }
.lightbox .lb-prev { left: 18px; }
.lightbox .lb-next { right: 18px; }

/* ── 视频 ────────────────────────────────────────────────── */
.video-grid { display: grid; gap: 20px; grid-template-columns: repeat(auto-fill, minmax(280px, 1fr)); }
.video-card {
  background: #fff; border: 1px solid var(--line);
  border-radius: var(--radius-lg); overflow: hidden;
}
.video-thumb {
  position: relative; aspect-ratio: 16/9;
  background: #0d1b2a; display: flex; align-items: center; justify-content: center;
}
.video-thumb img { width: 100%; height: 100%; object-fit: cover; opacity: .82; }
.video-thumb .play {
  position: absolute; width: 54px; height: 54px; border-radius: 50%;
  background: rgba(242,101,34,.95); color: #fff;
  display: flex; align-items: center; justify-content: center;
  font-size: 1.2rem; padding-left: 4px;
  transition: transform .2s;
}
.video-card:hover .play { transform: scale(1.12); }
.video-card .vc-body { padding: 14px; }
.video-card .vc-body h3 { font-size: .95rem; margin-bottom: 4px; }
.video-card .vc-body p { font-size: .83rem; color: var(--ink-soft); margin: 0; }

/* ── 表单 ────────────────────────────────────────────────── */
.form-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; }
.form-group { margin-bottom: 16px; }
.form-group.full { grid-column: 1 / -1; }
.form-group label { display: block; font-size: .87rem; font-weight: 600; margin-bottom: 5px; }
.form-group label .req { color: var(--brand-orange); }
.form-group input, .form-group select, .form-group textarea {
  width: 100%; padding: 10px 12px; font: inherit; font-size: .92rem;
  border: 1px solid var(--line); border-radius: var(--radius);
  background: #fff; color: var(--ink);
}
.form-group input:focus, .form-group select:focus, .form-group textarea:focus {
  outline: none; border-color: var(--brand-blue);
  box-shadow: 0 0 0 3px var(--brand-blue-light);
}
.form-group textarea { min-height: 110px; resize: vertical; }
.form-note { font-size: .82rem; color: var(--ink-mute); margin-top: 6px; }

.alert {
  padding: 12px 16px; border-radius: var(--radius);
  font-size: .89rem; margin-bottom: 18px; border: 1px solid;
}
.alert-ok { background: #e7f6ed; border-color: #b7e3c8; color: #1a7f47; }
.alert-info { background: var(--brand-blue-light); border-color: #b9d8f2; color: var(--brand-blue-dark); }
.alert-warn { background: var(--brand-orange-light); border-color: #f7cdae; color: var(--brand-orange-dark); }

/* ── 联系信息块 ──────────────────────────────────────────── */
.contact-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 30px; align-items: start; }
.info-list { list-style: none; margin: 0; padding: 0; }
.info-list li {
  display: flex; gap: 13px; padding: 13px 0;
  border-bottom: 1px solid var(--line-soft);
}
.info-list li:last-child { border-bottom: 0; }
.info-list .ii {
  width: 38px; height: 38px; flex-shrink: 0; border-radius: 50%;
  background: var(--brand-blue-light); color: var(--brand-blue);
  display: flex; align-items: center; justify-content: center;
  font-size: 1rem;
}
.info-list .il { font-size: .78rem; color: var(--ink-mute); }
.info-list .iv { font-weight: 600; font-size: .95rem; word-break: break-all; }

/* ── 页脚 ────────────────────────────────────────────────── */
.site-footer { background: #141a20; color: #a8b2bc; margin-top: 60px; }
.footer-top { padding: 46px 0 30px; }
.footer-cols { display: grid; grid-template-columns: 1.4fr 1fr 1fr 1.2fr; gap: 32px; }
.footer-cols h4 {
  color: #fff; font-size: .95rem; margin-bottom: 14px;
  padding-bottom: 8px; border-bottom: 1px solid #2c353e;
}
.footer-cols ul { list-style: none; margin: 0; padding: 0; }
.footer-cols li { margin-bottom: 7px; }
.footer-cols a { color: #a8b2bc; font-size: .87rem; }
.footer-cols a:hover { color: #fff; }
.footer-cols p { font-size: .87rem; line-height: 1.9; }
.footer-brand img { height: 34px; margin-bottom: 12px; }
.footer-bottom {
  border-top: 1px solid #262e36; padding: 16px 0;
  font-size: .81rem; color: #6f7b86;
  display: flex; justify-content: space-between; gap: 14px; flex-wrap: wrap;
}

/* ── 面包屑（浅色版）────────────────────────────────────── */
.crumb-light {
  background: var(--bg-soft); border-bottom: 1px solid var(--line);
  padding: 10px 0; font-size: .84rem; color: var(--ink-mute);
}
.crumb-light a { color: var(--ink-soft); }
.crumb-light a:hover { color: var(--brand-blue); }
.crumb-light .sep { margin: 0 7px; opacity: .5; }

/* ── 工具条 ──────────────────────────────────────────────── */
.toolbar {
  display: flex; gap: 12px; align-items: center; flex-wrap: wrap;
  padding: 14px 16px; background: var(--bg-soft);
  border: 1px solid var(--line); border-radius: var(--radius);
  margin-bottom: 20px;
}
.toolbar .tb-grow { margin-left: auto; }
.toolbar input[type="search"], .toolbar select {
  padding: 8px 12px; font: inherit; font-size: .88rem;
  border: 1px solid var(--line); border-radius: var(--radius);
  background: #fff; color: var(--ink);
}
.toolbar .count { font-size: .85rem; color: var(--ink-mute); }

.pager { display: flex; gap: 6px; justify-content: center; flex-wrap: wrap; margin-top: 32px; }
.pager a, .pager span {
  min-width: 38px; height: 38px; padding: 0 11px;
  display: inline-flex; align-items: center; justify-content: center;
  border: 1px solid var(--line); border-radius: var(--radius);
  background: #fff; font-size: .87rem; color: var(--ink-soft);
}
.pager a:hover { border-color: var(--brand-blue); color: var(--brand-blue); }
.pager .cur { background: var(--brand-blue); border-color: var(--brand-blue); color: #fff; font-weight: 700; }
.pager .dis { opacity: .45; pointer-events: none; }

/* ── 提示框 ──────────────────────────────────────────────── */
.callout {
  border-left: 4px solid var(--brand-blue);
  background: var(--brand-blue-light);
  padding: 16px 20px; border-radius: 0 var(--radius) var(--radius) 0;
  margin: 20px 0; font-size: .9rem;
}
.callout h4 { margin-bottom: 5px; font-size: .98rem; }
.callout p:last-child { margin-bottom: 0; }
.callout-orange { border-left-color: var(--brand-orange); background: var(--brand-orange-light); }

/* ── 表格 ────────────────────────────────────────────────── */
.data-table { width: 100%; border-collapse: collapse; font-size: .88rem; }
.data-table th, .data-table td { padding: 10px 13px; border-bottom: 1px solid var(--line-soft); text-align: left; }
.data-table th { background: var(--bg-soft); font-weight: 700; color: var(--ink); white-space: nowrap; }
.data-table tbody tr:hover { background: var(--bg-soft); }
.table-wrap { overflow-x: auto; border: 1px solid var(--line); border-radius: var(--radius-lg); }

/* ── 响应式 ──────────────────────────────────────────────── */
@media (max-width: 1080px) {
  .layout-side { grid-template-columns: 1fr; }
  .layout-side-aside { position: static; }
  .pd { grid-template-columns: 1fr; }
  .pd-gallery { position: static; }
  .footer-cols { grid-template-columns: 1fr 1fr; }
  .hero-inner { grid-template-columns: 1fr; padding: 46px 0; }
  .hero-art { order: -1; }
}

@media (max-width: 900px) {
  .nav-toggle { display: block; }
  .main-nav {
    position: fixed; inset: 0 0 0 auto; width: 300px; max-width: 84vw;
    background: #fff; box-shadow: -6px 0 28px rgba(0,0,0,.14);
    padding: 74px 0 30px; overflow-y: auto;
    transform: translateX(100%); transition: transform .25s;
    z-index: 700;
  }
  .main-nav.open { transform: translateX(0); }
  .nav-list { flex-direction: column; align-items: stretch; gap: 0; }
  .nav-list > li > a { padding: 13px 20px; border-bottom: 1px solid var(--line-soft); }
  .nav-list > li > a:hover { background: var(--brand-blue-light); }
  .sub-menu {
    position: static; opacity: 1; visibility: visible; transform: none;
    box-shadow: none; border: 0; border-bottom: 1px solid var(--line-soft);
    background: var(--bg-soft); padding: 4px 0;
  }
  .sub-menu a { padding: 9px 30px; }
  .nav-backdrop {
    position: fixed; inset: 0; background: rgba(0,0,0,.4); z-index: 650;
    opacity: 0; visibility: hidden; transition: opacity .25s, visibility .25s;
  }
  .nav-backdrop.open { opacity: 1; visibility: visible; }
  .feature-strip { grid-template-columns: 1fr 1fr; }
  .grid-4, .grid-3 { grid-template-columns: 1fr 1fr; }
  .contact-grid { grid-template-columns: 1fr; }
  .form-grid { grid-template-columns: 1fr; }
}

@media (max-width: 620px) {
  body { font-size: 14.5px; }
  .section { padding: 38px 0; }
  .hero h1 { font-size: 1.85rem; }
  .grid-2, .grid-3, .grid-4, .feature-strip { grid-template-columns: 1fr; }
  .footer-cols { grid-template-columns: 1fr; }
  .topbar .container { flex-direction: column; align-items: flex-start; gap: 2px; }
  .prod-grid { grid-template-columns: repeat(auto-fill, minmax(150px, 1fr)); }
  .pd-gallery .main-img { max-height: 300px; }
}

@media print {
  .site-header, .topbar, .site-footer, .nav-toggle, .toolbar { display: none !important; }
  body { font-size: 11pt; }
}

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after {
    animation-duration: .01ms !important;
    transition-duration: .01ms !important;
    scroll-behavior: auto !important;
  }
}